[marty_400]

Hiya All,

RE:Emergency Stop - the Back end Weaves side to side - whats up?

This has happended twice now. The 1st time I though was just a freak occurance - but twice?

Situations:
1. Bike and Tyres not fully warmed up both times. (I'd be just done the road - 5/10 mins top?)
2. Standard Brake Hoses and Fluid changed 800 miles ago. Brake Pads have loads of life left.
3. Bike was "serviced" 800 miles ago.
4. I get the weaving - I back off the front Brakes - and stop just in time!
5. CBR400, NC29


Hope you can advise on the areas I can look into


Cheers
Martin

[sb1000rr]

either ur rear wheel is has locked up and started weaving or its in the air a little doin the same thing. go and practice a few emergency stops using different front and rear brake pressures to find the optimal level...

[MCR001]

ha ha hah - u stomped the back break a tad hard - the wheel locked up, think we need to get u on the track so that you can learn how to put that to good use, powerslide into a corner....Yahooo.

[marty_400]

Thanks for the input guys!


The Crash bungs went on over the weekend.
I reckon next weekend, I'm going to find a quiet straight bit of road, and will practice the Emergency stops! (I'll read up on techniques over this week)

Cheers
Martin


PS:
Thinking about it:
1. Cold tyres and everything
2. "Technique" needs inproving

These are probably the main culprits!

3. The suspension can do with a reburbishment:
The bike rides brilliant on long twisty runs. So that must be the proof of the pudding. No major mechnical issues!

[sheepofblue]

Get your foot of the back brake altogether. The tiny amount it adds is offset by the bad it can add. Instead to stop fast grab the front in a very progressive manner. A sharp stab will bring the back up or worse lock the front. Progressive application compresses the forks without bottoming them (or it least not in a WAM welcome to the bottom manner) and as the load increases the front tire mushrooms and heats which both increase the grip thus allowing a heavier load. Careful playing on the edges of brake/tire performance and I hope this helps.

[CBR929RE]

Originally Posted by MCR001

ha ha hah - u stomped the back break a tad hard - the wheel locked up, think we need to get u on the track so that you can learn how to put that to good use, powerslide into a corner....Yahooo.

well talk about the perfect way to crash and get yourself hurt. powersliding is NOT done with the brakes. sliding the rear is done with the clutch and throttle. and even then its an advanced technique and should just be left to the top racers in the world. and its generally regarded as the slow way around the track, Gary McCoy being the exception pulling out a couple wins doing it.

Originally Posted by sheepofblue

Get your foot of the back brake altogether. The tiny amount it adds is offset by the bad it can add. Instead to stop fast grab the front in a very progressive manner. A sharp stab will bring the back up or worse lock the front. Progressive application compresses the forks without bottoming them (or it least not in a WAM welcome to the bottom manner) and as the load increases the front tire mushrooms and heats which both increase the grip thus allowing a heavier load. Careful playing on the edges of brake/tire performance and I hope this helps.

the only time I ever touch the rear brake is when coming to a stop sign/light.

[Twincam]

The rear brake should also be used for slow maneuvers in and around town (it is now included on the CBT... A LOT)

I think it could be due to the weight going on the front wheel causing the rear to get light and weave.

When learning make sure you don't "yank" on the lever as you may flip it, start off slow and steady, build your confidence up and don't rush.

Have you ever thought of doing the Bike Safe Scheme?

[dicknose]

Maybe also be a bit more aware that the bike, tyres (and possibly rider!) are cold and ride a bit more defensively.
If you are doing a lot of full/emergency stops then its probably a sign that you are a bit too aggressive.
Yes I know - you cant control the other vehicles, but you can leave more room, try to be more aware and attempt to avoid problems asap.

Have fun and stay safe.

[bjay51d]

I keep my rear brake mushy almost impossible for me to lock them.I trail brake with em sometimes.

[marty_400]

all good advise chaps!


I'm back into riding this year, froma 4 year lay off - so all a bit rusty!
Def looking at more training next year! 8)

[shakazulu12]

I do that all the time on mine. Need to get my forks re-worked or something, the back tire comes off the ground pretty frequently during hard braking. As others have mentioned, I don't even touch the rear brake anymore unless I'm coming into a corner way too hot.